The Performance Optimization On The Temperature And Light Of The Greenhouse And The Research On Its Application Effectiveness

Maximum conserving the inerior heat and effectively conserving energy were the mostimportant question of the greenhouse structural design. The most direct means to increase theproduction benefit was to increase the heat-insulating property of greenhouse and decrease theenergy consumption. To the greenhouse, heat preservation and day lighting had the sameimportant significance, and heat-insulating property of the greenhouse was the primacy of thegreenhouse development in north. This experiment optimized the heat-insulating property ofgreenhouse partial structure, designed the new greenhouse on a basis of Dongnong series and incombination with optimizing result, in addition, did productbility research about the newgreenhouse in the practice manufacture.This study analyzed the heat-insulating property of the new cold protective blanket and theordinary insulating blanket, the results showed that, the heat-insulating property of the new coldprotective was better than the ordinary insulating blanket, especially at 8o'clock, so didi the soiltemperature in 10cm depth.The temperature of three honeycomb walls toward 30cm was higher than the surface wall, sodid the temperature in the 12cm depth wall, and the stoma temperature of the honeycomb wall-Ⅰwas higher than others. And the day heat turnover of the honeycomb wall-Ⅱwas highest in allhoneycomb walls; the night heat turnover in 12cm and 24cm depth of the honeycomb wall-Ⅱwaslowest in all honeycomb walls.The front edge used EPS could effectively reduced the soil heat transport. In addition, theeffects of soil temperature increasing of the fornt edge used EPS in 130cm and 110cm depth wasbetter than the fornt edge used EPS in 90cm, the effects of soil temperature increasing of the forntedge used EPS in 130cm had little observably different with the fornt edge used EPS in 110cm.The using of the solar energy terrestrial heat bed was limited by outside temperature, and itssoil temperature increasing effects had little had little observably different with the greenhouseused EPS, but they were all better than CK. In addition, the effects of soil temperature increasingof the solar energy terrestrial was observably better than the greenhouse used EPS under theblower runned condition.The average roof angle of the three-stringed greenhouse was higher 1.7°than the ordinarygreenhouse in theory, and the sunshine incidence rate was higher 0.4%. The heat release of thethree-stringed gap between the greenhouse top and back slope was reduced.The luminousness of the three-stringed greenhouse was higher 4.3% than the contrastgreenhouse under no warming condition. Moreover, the temperature was higher 3.6℃and theinside soil temperature kept 10℃in winter.